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IHydroxypropyl Methyl Cellulose (HPMC)
IHydroxypropyl methyl cellulose, yenza lula i-propyl methyl cellulose (i-HPMC hydroxypropylmethylcellulose, isifinyezo), izoba ingxenye yenhlanganisela ye-non-ionic cellulose ether. Kuyi-semi-synthetic, engasebenzi, i-viscoelastic polymer evame ukusetshenziswa ku-ophthalmology njengento yokuthambisa, noma njengesamukeli noma isakhi emithini yomlomo, evame ukutholakala ezimpahleni eziningi ezihlukahlukene. I-Hydroxypropyl cellulose ingasetshenziswa njengesengezo sokudla, i-emulsifier, i-thickener, i-ejenti yokumiswa kanye ne-gelatin yezilwane esikhundleni.
IZINTO IMICIMBI Ukubukeka Impushana Emhlophe I-Decomposition Temperature 200min I-Discoloration Temperature 190-200 ℃ I-Viscosity 400 PH Inani 5~8 Ukuminyana 1.39g/cm3 Izinga lokushisa le-carbonization 280-300 ℃ Uhlobo Ibanga lokudla Okuqukethwe 99% Ukushuba kobuso 42-56dyne/cm yesixazululo esinamanzi esingu-2%. -
IHydroxypropyl Methylcellulose (MHPC)
IHydroxypropyl methylcellulose (MHPC) ayinaphunga, ayinambitheki, ayinabuthi i-cellulose ethers abe namaqembu e-hyrdroxyl ochungechungeni lwe-cellulose esikhundleni seqembu le-methoxy noma le-hydroxypropyl elinokuncibilika okuhle kwamanzi. I-HPMC F60S iyibanga le-viscosity ephezulu elisetshenziswa njenge-thickener, binder, kanye nefilimu yangaphambili kumakhemikhali ezolimo, okokuhlanganisa, izitsha zobumba, izinto zokunamathisela, oyinki, nezinye izinhlelo zokusebenza ezihlukahlukene.
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I-Hydroxyethyl Cellulose (HEC)
IHydroxyethyl Cellulose(HEC) iyi-polymer engeyona i-ionic, encibilika emanzini etholakala ku-cellulose ngokusebenzisa uchungechunge lwezinqubo zamakhemikhali nezomzimba. I-HEC iyimpushana emhlophe kuya kokukhanyayo, enganaphunga futhi enganambitheki, encibilika kalula emanzini ashisayo noma abandayo ukuze yakhe i-viscous gel solution.Lapho i-pH kusixazululo 2 kuya ku-12, isixazululo sizinzile impela.Njengoba iqembu le-HEC lingelona i-nonionic kwisisombululo samanzi, ngeke lisabele namanye ama-anion noma ama-cations futhi alizwani nosawoti.
Kodwa i-molecule ye-HEC iyakwazi ukukhiqiza i-esterification, i-etherification, ngakho-ke kungenzeka ukuthi iyenze ingancibiliki emanzini noma ithuthukise izakhiwo zayo.I-HEC futhi inekhono elihle lokwenza ifilimu nomsebenzi ongaphezulu.
